DSG-423 ENGINE
02-35
Cylinder Head Assembly
CAUTION: If installing original valves, make sure
they are installed in the same position as removed.
1. Coat valve stems and guides with clean engine oil
and install into cylinder head.
CAUTION: Use protector provided with replacement
kit to prevent damage to the valve seals.
2. Using special tool 303-470, install valve seals onto
the guides.
3. Position valve springs and retainers.
4. Using special tools 303-350, 303-300 and 303-472,
compress valve spring and install retainer keys.
NOTE: Make sure keys are seated properly.
CAUTION: Be sure to install tappets in the same
location as removed.
5. Install 16 valve tappets.
6. Install a new CHT Sensor:
• Tighten to 12 Nm (9 lb-ft).
7. Install 4 new spark plugs (properly gapped):
• Tighten to 15 Nm (11 lb-ft).
8. Using a new gasket, install coolant outlet pipe and 4
bolts:
• Tighten to 10 Nm (89 lb-in).
9. Install rear lifting eye and front lifting eye bracket:
• Tighten to 45 Nm (33 lb-ft).
Tappet
Key
Retainer
Spring
Seal
Valves
CHT Sensor
Spark Plug
Rear
Lifting Eye
Front
Lifting Eye